Better this kind of scoring system then those ghastly dead rubbers or outright cancelled matches in DC, guarantees crowd gets their moneys worth.
And when you can find a futures with this level of play let me know.
Some people have just been brainwashed by the ATP monopoly - good for ATP and ITF to get a bit of genuine competition.
Level of play isn't everything. I find watching two futures player scrapping like mad for a couple of ranking points and a few hundred dollars far more entertaining than the top guys playing meaningless matches.
As for dead rubbers, obviously far from ideal but far better than a contrived scoring system where one team can win every match on days one and two yet still lose on day three. Also a deciding 5th rubber, played over 5 sets in Davis Cup, is many, many times more interesting than anything the Laver Cup will ever produce.